[mythtv-users] What happens if multiple frontends want to record same programme?

[nospam312]

Can anyone running multiple frontends tell me the process of what
happens if you want to record the same programme on both frontend
machines.  For example, user1 and user2 wants to record the same
program.  user1 watches it and deletes does this mean user2 recording
is also deleted?  Does it mean there are two copies of the same file
on the hard disk taking up double the amount of space?  TIA.